JPS6469200A - Wide band elastic wave all directional converter - Google Patents

Wide band elastic wave all directional converter

Info

Publication number
JPS6469200A
JPS6469200A JP63201814A JP20181488A JPS6469200A JP S6469200 A JPS6469200 A JP S6469200A JP 63201814 A JP63201814 A JP 63201814A JP 20181488 A JP20181488 A JP 20181488A JP S6469200 A JPS6469200 A JP S6469200A
Authority
JP
Japan
Prior art keywords
vibrating film
parts
same
permeability
ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP63201814A
Other languages
Japanese (ja)
Inventor
Kurain Jiikufuriito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of JPS6469200A publication Critical patent/JPS6469200A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R15/00—Magnetostrictive transducers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
    • G01H11/02—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by magnetic means, e.g. reluctance
    • G01H11/04—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by magnetic means, e.g. reluctance using magnetostrictive devices

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

PURPOSE: To improve the performance characteristics of a transducer by adding the section of high permeability in the same form as a magnetic distortion vibrating film. CONSTITUTION: A continuous polarizing means is provided with outer and inner faces in the almost same form as the vibrating film and that outer face is equipped with high-permeability parts 40 and 42 existent near the back of the vibrating film and a permanent magnet 38 arranged in contact with the parts 40 and 42. Namely, it is preferable to form the magnetic distortion vibrating film semi-spherical, to form the high-permeability parts 40 and 42 semi-spherical as well, to fit the parts into that hemispherical vibrating film, to compose the permanent magnet 38 of one flat ring at least, to make the diameter of this ring a little shorter than the diameter of parts 40 and 42 and to arrange the ring inside these parts 40 and 42. Thus, a uniform magnetic field is formed onto the magnetic distortion vibrating film and the respective surface elements of the vibrating film can exactly react to the same acoustic wave or the same electric signal with the same amplitude.
JP63201814A 1987-08-14 1988-08-12 Wide band elastic wave all directional converter Pending JPS6469200A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8711598A FR2619481B1 (en) 1987-08-14 1987-08-14 WIDE BANDWIDTH ELASTIC WAVES OMNIDIRECTIONAL TRANSDUCER

Publications (1)

Publication Number Publication Date
JPS6469200A true JPS6469200A (en) 1989-03-15

Family

ID=9354218

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63201814A Pending JPS6469200A (en) 1987-08-14 1988-08-12 Wide band elastic wave all directional converter

Country Status (5)

Country Link
US (1) US4862430A (en)
EP (1) EP0303547B1 (en)
JP (1) JPS6469200A (en)
DE (1) DE3865581D1 (en)
FR (1) FR2619481B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010178017A (en) * 2009-01-29 2010-08-12 Taisei Corp Oscillator

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8803776U1 (en) * 1988-03-19 1988-05-11 Klein, Siegfried, Dr. Prof., Paris Acoustoelectric transducer
US4951271A (en) * 1989-04-17 1990-08-21 The United States Of America As Represented By The Secretary Of The Navy Flextensional hydrophone
FR2648664A1 (en) * 1989-06-15 1990-12-21 Commissariat Energie Atomique OMNIDIRECTIONAL SPHERICAL MEMBRANE SPEAKER USING A MAGNETOSTRICTIVE RIBBON
US20060196723A1 (en) * 2005-03-03 2006-09-07 White Fred I Balloon speaker asembly
CN102353444B (en) * 2011-10-08 2012-12-19 哈尔滨工程大学 Resonance type vector receiver under deep water
FR3003113B1 (en) * 2013-03-11 2015-04-10 Dcns SYSTEM FOR GENERATING SOUNDS IN WATER

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1635045A (en) * 1922-10-31 1927-07-05 Kauch Robert Ground-speed indicator
US1653045A (en) * 1926-09-04 1927-12-20 Chase Crowley E Loud-speaker unit
GB526641A (en) * 1938-03-23 1940-09-23 Charles Louis Florisson Improvements in and relating to vibrators of the magneto-striction type
BE437610A (en) * 1939-01-13 1940-07-09
US2728063A (en) * 1951-02-27 1955-12-20 Raytheon Mfg Co Pressure polarized transducers
FR2503515B1 (en) * 1981-04-01 1985-12-27 Klein Siegfried OMNIDIRECTIONAL SPEAKER FOR ACUTE SOUND SPECTRUM FREQUENCIES
DE3138566A1 (en) * 1981-09-28 1983-04-07 Siegfried Dr. 75009 Paris Klein LOUDSPEAKERS, ESPECIALLY HIGH-TONE SPEAKERS
US4782471A (en) * 1984-08-28 1988-11-01 Commissariat A L'energie Atomique Omnidirectional transducer of elastic waves with a wide pass band and production process
US4642802A (en) * 1984-12-14 1987-02-10 Raytheon Company Elimination of magnetic biasing using magnetostrictive materials of opposite strain

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010178017A (en) * 2009-01-29 2010-08-12 Taisei Corp Oscillator

Also Published As

Publication number Publication date
FR2619481A1 (en) 1989-02-17
DE3865581D1 (en) 1991-11-21
EP0303547A1 (en) 1989-02-15
EP0303547B1 (en) 1991-10-16
US4862430A (en) 1989-08-29
FR2619481B1 (en) 1989-11-17

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